5-96 D30 Line Distance Protection System GE Multilin5.5 FLEXLOGIC™ 5 SETTINGS55.5.2 FLEXLOGIC™ RULESWhen forming a FlexLogic™ equation, the sequence in the linear array of parameters must follow these general rules:1. Operands must precede the operator which uses the operands as inputs.2. Operators have only one output. The output of an operator must be used to create a virtual output if it is to be used asan input to two or more operators.3. Assigning the output of an operator to a virtual output terminates the equation.4. A timer operator (for example, "TIMER 1") or virtual output assignment (for example, " = Virt Op 1") may only be usedonce. If this rule is broken, a syntax error will be declared.Table 5–8: FLEXLOGIC™ GATE CHARACTERISTICSGATES NUMBER OF INPUTS OUTPUT IS ‘1’ (= ON) IF...NOT 1 input is ‘0’OR 2 to 16 any input is ‘1’AND 2 to 16 all inputs are ‘1’NOR 2 to 16 all inputs are ‘0’NAND 2 to 16 any input is ‘0’XOR 2 only one input is ‘1’Table 5–9: FLEXLOGIC™ OPERATORSTYPE SYNTAX DESCRIPTION NOTESEditor INSERT Insert a parameter in an equation list.DELETE Delete a parameter from an equation list.End END The first END encountered signifies the last entry inthe list of processed FlexLogic™ parameters.One-shot POSITIVE ONE SHOT One shot that responds to a positive going edge. A ‘one shot’ refers to a single input gatethat generates a pulse in response to anedge on the input. The output from a ‘oneshot’ is True (positive) for only one passthrough the FlexLogic™ equation. There isa maximum of 64 ‘one shots’.NEGATIVE ONESHOTOne shot that responds to a negative going edge.DUAL ONE SHOT One shot that responds to both the positive andnegative going edges.LogicgateNOT Logical NOT Operates on the previous parameter.OR(2)OR(16)2 input OR gate16 input OR gateOperates on the 2 previous parameters.Operates on the 16 previous parameters.AND(2)AND(16)2 input AND gate16 input AND gateOperates on the 2 previous parameters.Operates on the 16 previous parameters.NOR(2)NOR(16)2 input NOR gate16 input NOR gateOperates on the 2 previous parameters.Operates on the 16 previous parameters.NAND(2)NAND(16)2 input NAND gate16 input NAND gateOperates on the 2 previous parameters.Operates on the 16 previous parameters.XOR(2) 2 input Exclusive OR gate Operates on the 2 previous parameters.LATCH (S,R) Latch (set, reset): reset-dominant The parameter preceding LATCH(S,R) isthe reset input. The parameter precedingthe reset input is the set input.Timer TIMER 1TIMER 32Timer set with FlexLogic™ timer 1 settings.Timer set with FlexLogic™ timer 32 settings.The timer is started by the precedingparameter. The output of the timer isTIMER #.Assignvirtualoutput= Virt Op 1= Virt Op 96Assigns previous FlexLogic™ operand to virtualoutput 1.Assigns previous FlexLogic™ operand to virtualoutput 96.The virtual output is set by the precedingparameter
